greybus: remove unused gb_connection_handler externs

Remove some leftover cruft from recent refactoring of
connection handlers.

Signed-off-by: Matt Porter <mporter@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
1 file changed
tree: 6c9004e16e141eec2c5b382f87e44214a028c7c6
  1. drivers/